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Synthetic aperture pulse-echo imaging with rectangular boundary arrays [acoustic imaging].

R J Kozick1, S A Kassam

  • 1AT&T Bell Lab., Holmdel, NJ.

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
|January 1, 1993
PubMed
Summary

Synthetic-aperture signal processing, specifically image addition, significantly improves finite-range pulse-echo imaging quality. This technique reduces sidelobes from square boundary arrays, enhancing overall image clarity for better diagnostic insights.

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Area of Science:

  • Acoustics
  • Signal Processing
  • Medical Imaging

Background:

  • Square boundary arrays in finite-range, pulse-echo imaging produce poor image quality without advanced processing.
  • Existing signal processing methods may not be optimal for this specific imaging configuration.

Purpose of the Study:

  • To investigate the effectiveness of a square boundary array in finite-range, pulse-echo imaging.
  • To evaluate the utility of synthetic-aperture signal processing, specifically image addition, for improving image quality.

Main Methods:

  • Simulations were used to analyze the performance of the square boundary array.
  • The image addition technique was applied and its impact on image quality was assessed.

Main Results:

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  • Without additional signal processing, images from square boundary arrays are of poor quality.
  • Image addition effectively reduces sidelobes, significantly improving image quality in finite-range, pulse-echo imaging.

Conclusions:

  • Image addition is a viable and effective signal processing technique for enhancing finite-range, pulse-echo imaging.
  • The findings are expected to be applicable to non-square boundary array geometries as well.